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MCHN7 energetic material and preparation method thereof and application of MCHN7 energetic material as initiating explosive, explosive and pyrotechnic composition

A pyrotechnic agent and detonator technology, which can be used in the direction of a single substance as an explosive, a compound of group 7/17 elements of the periodic table, and a group 7/17 organic compound without a C-metal bond, which can solve unfavorable commercial applications , Insufficient explosive performance, high risk and other problems, achieve excellent stability and safety, overcome insufficient explosive performance, and overcome the effects of lead pollution

Active Publication Date: 2020-05-15
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these primary explosives are simple to synthesize and cheap in price, there is a relatively serious lead pollution problem in their explosive products, and due to insufficient explosive performance, a large amount of metering is required when detonating.
Therefore, new primary explosives do not contain lead and have stronger explosive performance, such as dinitroammonium bistetrazolium potassium salt, but its synthesis steps are numerous, there is a large risk and the price is expensive, which is not conducive to commercial application

Method used

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  • MCHN7 energetic material and preparation method thereof and application of MCHN7 energetic material as initiating explosive, explosive and pyrotechnic composition
  • MCHN7 energetic material and preparation method thereof and application of MCHN7 energetic material as initiating explosive, explosive and pyrotechnic composition
  • MCHN7 energetic material and preparation method thereof and application of MCHN7 energetic material as initiating explosive, explosive and pyrotechnic composition

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The preparation of embodiment 1 sample

[0049] Mix the raw materials of metal salt, tetrazole and sodium azide evenly, put them into a high-pressure reactor, add a certain amount of water as a solvent, and place them in an environment of 90-200°C for 24-96 hours, then filter. Obtain the energetic material MCHN 7 . The sample numbers, types and amounts of raw materials, heating temperature, stirring time and crystals are shown in Table 1.

[0050] Table 1

[0051]

[0052]

Embodiment 2

[0053] The structural characterization of embodiment 2 sample

[0054] Sample P1 # ~P7 # The X-ray powder diffraction phase analysis (XRD) after grinding was carried out on the MiniFlex600 X-ray diffractometer of Rigaku Company, Cu target, Kα radiation source (λ=0. 154184nm). The results showed that the prepared samples were all samples with high purity and high crystallinity.

[0055] Sample P1 # ~P7 # The X-ray single crystal diffraction was carried out on a Mercury CCD type single crystal diffractometer, Mo target, Kα radiation source (λ=0.07107nm), test temperature 293K. And through SHELXTL-2014 for structural analysis. Take P1 # As a typical representative, the XRD diffraction pattern obtained by fitting the single crystal data is compared with the experimentally measured XRD diffraction pattern as follows: figure 1 As shown, it can be seen that the XRD diffraction pattern obtained by fitting the single crystal data is highly consistent with the XRD diffraction pa...

Embodiment 3

[0061] Example 3 Friction Sensitivity Experiment and Electrostatic Spark Sensitivity Experiment

[0062] For sample P1 # ~P7 # Carry out the friction sensitivity experiment, the specific steps are as follows:

[0063] According to the national military standard for energetic materials, we use the BAM friction sensitivity tester FSKM-10 produced by the Czech OZM company to determine the value corresponding to the 50% ignition rate of the compound through dozens of tests.

[0064] Take P5 # For example, the explosion diagram of the friction sensitivity experiment is as follows image 3 shown. Depend on image 3 It can be seen that the sample exploded violently during the test.

[0065] For sample P1 # ~P7 # Conduct electrostatic spark sensitivity experiment, the specific steps are as follows:

[0066] According to the electrostatic spark sensitivity test standard of energetic materials, we use the electrostatic spark sensitivity tester Xspark8 produced by the Czech OZM ...

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Abstract

The invention discloses an MCHN7 energetic material and a preparation method thereof and an application of the MCHN7 energetic material as an initiating explosive, an explosive and a pyrotechnic composition. The chemical formula of the energetic material is MCHN7, wherein M is selected from at least one of IB group metal elements, IIB group metal elements, VIIB group metal elements and VIII groupmetal elements; the crystal structure of the energetic material belongs to an orthorhombic system, and the space group is P2[1]2[1]2[1]. The energetic material has excellent stability and safety, andis green and environment-friendly. Experimental determination shows that the MCHN7 energetic material has thermal stability at the tempeture of not less than 255 DEG C, the impact sensitivity is 0.8-2.0 J, the friction sensitivity is greater than or equal to 5 N, and the electrostatic spark sensitivity is 2-200 mJ. Compared with an existing commercial initiating explosive, the energetic material disclosed by the invention has the advantages that the explosion heat is 2-4 times that of the existing commercial initiating explosive, the defects of serious lead pollution and insufficient explosionperformance are overcome, and the energetic material has important commercial application value in the field of green high-performance energetic materials.

Description

technical field [0001] The application relates to an energetic material, its preparation method and its application as a primer, explosive and pyrotechnic agent, belonging to the field of energetic materials. Background technique [0002] Energetic materials are mainly used in fields such as primers, explosives and pyrotechnic agents. The current commercial primary explosives mainly include lead azide Pb(N 3 ) 2 (LA), lead stephnate C 6 h 3 N 3 o 9 Pb(LS) etc. Although these primary explosives are simple to synthesize and cheap in price, there is a relatively serious lead pollution problem in their explosive products, and a large amount of measurement is required when detonating due to insufficient explosive performance. Therefore, the new primary explosives do not contain lead and have stronger explosive performance, such as dinitroammonium bistetrazolium potassium salt, but its synthesis steps are numerous, there is great danger and high price, which is not conduciv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F1/08C07F3/06C07F3/08C07F13/00C07F15/02C07F15/04C07F15/06C06B49/00
CPCC07F13/005C07F15/025C07F15/045C07F15/065C07F1/005C07F3/003C06B49/00C07B2200/13Y02P20/54
Inventor 徐建刚郑发鲲郭国聪徐忠宁吴慧芳卢健
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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